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A rocket of mass 4.5 x 105 kg is accelerating straightup. Its engines produce an upward thrust of 7.5 x106 N, and the air resistance produces a force that isopposite the motion and magnitutde 2.4 x 106 N. Find the acceleration of the rocket.
A mass M is split into two parts, m and M - m, which are then separated by a certain distance. What ratio m/M gives the least gravitational potential energy for the system?
An archer lines up an arrow on the horizontal exactly dead center on a target as drawn in the figure below. How long was the arrow in the air before striking the target
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.0 mm)sin(24.0x -2.0 s-1 * t+0.320 rad), with x in meters and t in seconds. What is the wavelength ? of the two waves? W..
A car of mass m = 1470 kg is pushed off a cliff of height h = 23 m. If the car lands a distance of 7 m from the base of the cliff, what was the kinetic energy of the car
A singly charged positive ion has a mass of 2.53 10-26 kg. After being accelerated through a potential difference of 270 V, the ion enters a magnetic field of 0.590 T, Calculate the radius of the path of the ion in the field
A 325 kg crate is lowered to the ground by a helicopter. Its fastened to the end of the vertical cable which has a tension of 3500N. Is the crate speeding up, slowing down, or descending at a constant speed? Show your work
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. How much charge is on each sphere
If the total momentum of a system is a constant, then we say that the total momentum is conserved. A consequence of Newton’s laws of physics is that the total momentum of a system is conserved whenever the net external force on the system is zero.
A car travelling at 25.0 {rm m/s} runs out of gas while travelling up a 22.0^circ slope. How far will the car go up the hill before it runs out of gas.
Describe the characteristics of the pH scale. Compare and contrast acids and bases. Provide examples of some of the products that you know are basic and acidic in nature
Consider a dry air parcel at -12 degrees celsius and 450mb that descends adiabatically down to the surface where p=1000mb, Calculate the potential temperature at the surface
A 35.0 cm diameter coil consists of 30 turns of a circular copper wire 2.80 mm in diameter. determine the rate at which thermal energy is produced
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